JEC fails to execute zabbix server script

[artm]

When trying to acknowledge an alarm from JSM using zabbix-1.0.3_jec-1.0.4, JEC action handler starts, but fails calling out to the python script with:

Received 1 messages from the queue[...]. 
Job[...] is being submitted 
Job[...] is submitted to worker[...] 
Message[...] is deleted from the queue[...]. 
Action[Acknowledge] execution of message[...] failed: exit status 2 Stderr: usage: 
    jec_action_executor.py [-h] 
        -payload QUEUEPAYLOAD -apiKey APIKEY -jsmUrl JSMURL -logLevel LOGLEVEL 
        [-command_url COMMAND_URL] [-user USER] [-password PASSWORD]
jec_action_executor.py: error: unrecognized arguments: 
    --jecNamedPipe /var/tmp/jec/jecCallbackPipe-... 
Job[...] has been processed by worker[...]. 
Current Worker: 4, Idle Worker: 4, Queue Size: 0, Queue load: 0 
Successfully sent result of message[...] to Jira Service Management and it took 0.800652 seconds.